Beam test of a prototype fine-granularity scintillator tile EM calorimeter

We are studying the performance of an electromagnetic calorimeter for the linear collider detector that uses 4 cm × 4 cm × 1 mm plastic scintillator tiles as active media. To establish fabrication technique we built a thin test module. We then studied the uniformity of the module response as well as its position resolution at a test beam facility at the High-Energy Accelerator Research Organization.